WLP624

UPDATE: I found the tool, not in the trunk where everything I read said it would be, but hidden in a black bag in the small storage well behind the drivers seat.

I need to remove the wheels in order to install low dust brake pads. My car came with run-flats so there are no tools for changing a tire, including the cap removal tool. I've tried it by hand but it wouldn't budge. Does anyone know a way to remove the center cap to access the lugs without the removal tool? Thanks.